"android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view"的解决方法

2011-12-12 12:02 - fzblog.net

Comments: 1

最近在学习Android, 在创建线程的时候操作视图出现了问题:

代码如下

09-20 08:42:44.234: ERROR/AndroidRuntime(399): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.

找了好久资料才知道,线程里面操作视图要在Handler里面，而不能在主线程里面

下面是原来的代码：

代码如下

if(view0.getAdapter() == null){
//System.out.println(view0.getAdapter());
//loading
pDialog = ProgressDialog.show(Tabs1.this, loadingTitle, loadingBody, true, false);
//新建进程
new Thread(){
public void run(){
Calculation.calculate(2);
final String[] data = getResult("http://news.ifeng.com/rt-channel/rtlist_0/","utf-8",0);
adapter = new ArrayAdapter<String>(Tabs1.this,android.R.layout.simple_list_item_1, data);
view0.setAdapter(adapter);
handler.sendEmptyMessage(0);
}
}.start();
}

改进后的代码：

代码如下

......
if(view0.getAdapter() == null){
//System.out.println(view0.getAdapter());
//loading
pDialog = ProgressDialog.show(Tabs1.this, loadingTitle, loadingBody, true, false);
//新建进程
new Thread(){
public void run(){
Calculation.calculate(2);
final String[] data = getResult("http://news.ifeng.com/rt-channel/rtlist_0/","utf-8",0);
adapter = new ArrayAdapter<String>(Tabs1.this,android.R.layout.simple_list_item_1, data);
av = view0;
handler.sendEmptyMessage(0);
}
}.start();
}
......
//handler
private Handler handler = new Handler(){
public void handleMessage(Message msg){
pDialog.dismiss();
av.setAdapter(adapter);
}
};